Sewer-trap



(No Model.)

0. KNISPEL. SEWER TRAP. No. 539,689. Patented May 21, 1895.

L w n 0 A T I M N VK m N M w 5 R H C m M m m. m m M 8 "M Q S E N H W NITED STATES CHRISTIAN KNISPEL, OF NEWARK, NEW JERSEY.

SEWER-TRAP.

SPECIFICATION forming part of Letters were No. 539,689, dated May 21, 1895.

Application filed August 11, 18 94. i

To all whom it may concern-- Be it known that I, CHRISTIAN KNISPEL, a citizen of the United States, residing atNewark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Sewer-Traps; and I do hereby declare the following to be a f ull,'clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of my present invention is to provide a cheap and serviceable anti-siphon sewer trap, comprising therein an arrangement of separable parts, to enable the cleaning out of the trap, the construction being such as to permit the waste water to flow into the sewer pipe, but which will exclude water from running back into the wash-basin, and will also successfully prevent the escape of foul gases into the building.

The invention therefore consists in the novel arrangement and combinations of parts, such as will be hereinafter fully described and finally embodied in the clauses of the claim, with a view of producinga sewer trap, in which, after the inner parts of the trap have been removed, they can be thoroughly cleansed or boiled. and before replacing the parts, the trap-casing as well as a great portion of the waste pipe, can also be cleaned.

By my arrangement and construction of parts to be fully described hereinafter, a sanitary sewer trap is the result, and one, which holds a greater amount of water than the ordinary construction of sewer trap. Further: more, there is no danger of the trap breaking or splitting, in the winter, should the water therein freeze, for owing to the conical shape of the inner Waste-water reservoir in the trap, there is sufficient room for the expansion of the metal.

The invention is illustrated in the accompanying sheets of drawings, in which- Figure 1 is a vertical section of my improved sewer'trap arranged in position above the sewer-pipe and connected with an ordinary sink. Fig. 2 is a top view of the same, illustrating the arrangement of a removable strainer used in connection with the trap.

Serial No, 520,006. (No model.)

Fig. 3 is a side view of the strainer and fun- ;nel-sh'aped outlet or pipe connected therewith. Figs. 4 and 5 are a plan and side view, respectively, of a basin or reservoir in the trap-casing; and Fig. 6 is a plan view of a check-valve used in connection with a fresh-air supplypipe illustrated in said Fig. 1.

Similar letters of reference are employed to indicate corresponding parts in eachof the above described views.

In said views, A represents the sewer trap.

or. is the outer trap casing, which is provided with the usual flange a by means of which and the screws 00 it is securely arranged in a sink or wash basin 1), as illustrated in Fig. 1. Said casing is provided in the bottom with an outlet a connected in any well-known manner to the sewer-pipe b. Near the top of the inner surface of the trap-casing a, there is an annular recess or off-set 0. on which I arrange a rubber gasket or washer d. On this gasket is placed the surrounding edge 0' of a suitable plate 0 provided with holes 0 thereby forming a sieve. Secured beneath the surrounding edge a of the plate 0, by means of suitable screws e is a funnel-shaped pipe e, the lower portion e of which extends down into a removable basin or reservoir f, forming a seal cup, and hence into the water therein. Said basin, which is cup-shaped, as will be seen from Figs. 1 and 5, is provided with suitable projections or ribs f which fit against the inner surrounding surface of the casing a, thereby holding said basin or reservoir fin place, but still forming passage-ways a between the same and the casing a to permit the passage of the overflow from the basin or reservoir f down said passageways a into the sewer pipe I), as will be clearly evident.

To permit the removal of the strainer plate 0, or to enable the securing of the same upon the annular recess a in the casing a, said plate a is formed with oppositely placed cutaway portions c to enable said plate to be placed over two inwardly extending lugs or holding plates 0. on the upper portion of the casing a. By turning said plate 0 by means of a suitable finger-piece c on its seat in th casing a in the direction of arrow 2 (see Fig. .2), certain inclines on the plate are firmly brought into holding contact with the under surface of said lugs a, thereby securely clos ing the plate down upon the gasketd and preventing the escape of any gas in the trap. Each incline is preferably provided with a suitable projection 0 forming a striking portion for a hammer or other tool, when it is desired to move the plate 0 in the opposite direction, to separate the parts of the trap for cleaning. As will be seen from an inspection of Fig. 1, said casing a may be provided with an outlet 0. in the side near the top thereof, with which I connect the roof pipe g for ventilation to the trap.

In some cases, where it is impracticable to run a ventilating pipe, as g, to the roof, I connect with the elbow g of said pipe, a pipe h, which is open at h and is provided with a suitable check valve therein, which operates to permit the entrance of fresh air into the pipe and hence into the trap casing a, but closes, in case there should, through some unforeseen cause, be an excess of water in the trap and Which would therefore enter the pipe g. The admission of the air into the trap casing also prevents the siphoning of the reservoir or basin f.

The construction of the ventilator valve consists essentially of a plate 2' resting on asuitable cross-bar i and inclined, as shown. When said plate i lifts to permitthe entrance of the air into the pipe h, it strikes a second bar 2' which is preferably corrugated to prevent the plate 2' sticking thereto in case said parts are wet, whereby saidplate 5 is thrown back to its original position to close the valve, as will be clearly evident. To prevent insects or bugs from entering into said pipe h and causing the inoperativeness of the said valve, the free end of the pipe h may be protected with a wire screen 2' as shown.

Having thus described my invention, what I claim is- 1. The herein described sewer trap, comprising therein, a casing 0. having an opening a and means for securing said casing to a sink or wash basin, a perforated plate removably arranged on a seat in said casing, a gasket d, a funnel-shaped pipe 6 connected with said perforated plate, and a seal cupf having ribs f on its sides adapted to fit the inner surface of said casing a, whereby said seal cup is retained in a removable position in said casing, substantially as and for the purposes set forth.

2. The herein described sewer trap, coinprising therein, a casing a. having an opening a and a flange a, for securing said casing to a sink or wash-basin, an annular off-set or recess a in said casing, a gasket d thereon, a perforated plate 0 rernovably arranged in said recess in said casing, a funnel-shaped pipe e connected with said perforated plate, and a seal cupf having ribs f on its sides adapted to fit the inner surface of said casing, whereby said seal cup is retained in a removable position in said casing, substantially as and for the purposes set forth.

3. The herein described sewer trap, comprising therein, a casing at having an opening a and a flange a for securing said casing to a sink or waslrbasin, an annular oh":- set or recess a in said casing, a gasket cl thereon, a perforated plate 0 removably arranged in said recess in said casing, inwardly extending lugs or holding plates 61. on the upper portion of said casing, oppositely arranged cut-away portions 0 on said plate 0, to permit the placing of said plate a over said lugs a and inclines c on said plate 0 adapted to be brought into holding contact with said lugs or plates at, a funnel-shaped pipe e connected with said perforated plate 0, and a seal cupf having ribs f on its sides adapted to fit the inner surface of said casing, whereby said seal cup is retained in a removable position in said casing,substantially as and for the purposes set forth. 7

4. In the herein described sewer trap, the casing at, having. an opening a and means for securing said casing to a sink or wash basin, an outlet a in said casing, having a ventilating pipe, and a valve in said pipe, consisting, essentially, of a movable plate 1', and bars 1" and t in said pipe, one above and the other below said plate 1', the bar 1? being corrugated to prevent sticking, in combination, with a funnel-shaped pipe 2, a perforated plate thereon, and a seal cupf having ribsf on its sides, adapted to fit the inner surface of said casing a, whereby said seal cup is retained in a removable position in said casing, substantially as and for the purposes set forth.

In testimony that I claim the invention set forth above I have hereunto set my hand this 10th day of August, 1894.

' CHRISTIAN KNISPEL.

Witnesses:

FREDK. C. FBAENTZEL, WM. H. GAMFIELD, J r. 

